What is X% of Y?
Enter values to calculate the result.
Calculator
Percentage Calculator
Calculate percentages, percentage changes and percentage values instantly.
X is what percentage of Y?
Enter values to calculate the result.
Percentage increase or decrease
Enter values to calculate the result.
About this percentage calculator
This free percentage calculator helps you solve common percentage calculations quickly. You can calculate a percentage of a number, find what percentage one number is of another, and calculate percentage increase or decrease.
How it works
Enter the values in the calculator and the result will update instantly. Everything runs directly in your browser.
Frequently asked questions
- What types of percentage calculations can I do? ▾
- You can calculate what percentage one number is of another, find a percentage of a number, and calculate the percentage increase or decrease between two values.
- How do I calculate a percentage of a number? ▾
- Divide the part by the whole and multiply by 100. For example, to find what percentage 25 is of 200: (25 / 200) × 100 = 12.5%.
- How do I calculate percentage change? ▾
- Subtract the original value from the new value, divide by the original value, then multiply by 100. A positive result is an increase, a negative result is a decrease.
- Can I use this for VAT and discount calculations? ▾
- Yes. You can use the percentage calculator to add or remove a percentage, which works for tax, discounts and tips.
- Is this percentage calculator free? ▾
- Yes, completely free. No sign-up, no download and no ads. Works entirely in your browser.